CGTalk - Lumakey to get alpha doing garbage roto

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DEVILSAN

12-11-2008, 07:43 AM

Hi need some help in luma key ,

i have done a garbage roto around ear and i want to do luma key and generate alpha channel and add it to rest of roto, can you guys show me what best way should i choose to do this, i want to avoid roto coz when i am doing roto the guys movement is so random in shot that i end up with swiming on edges and moreover the shot is 2K so swimming is easily becomes visible... :hmm:

Aneks

12-14-2008, 01:00 AM

Looks like you are using Shake:

lumakey=>inside+rotoshape=>over rest of key.

if you want to avoid swimming why don't attach the rotoshape to a tracker?

DEVILSAN

12-14-2008, 01:21 AM

yea i already figured it out.. its so helpful, i got alpha most of done by this method.. :thumbsup:

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